Monolithic concrete silo and forms for making the same



AND FORMS Dec. 31, 1968 KUC MONOLITHIC CONCRETE SI FOR KING THE SAME Fil July 22, 1965 1 2 I I J r-n: MP4: I H

United States Patent 3,418,769 MONOLITHIC CONCRETE SILO AND FORMS FOR IHAKING THE SAME Ewald D. Kuck, Rte. 1, New Bremen, Ohio 45869 Filed July 22, 1965, Ser. N0. 473,956

1 Claim. (Cl. 52-434) ABSTRACT OF THE DIS CLOSURE.

A cast concrete silo having an integral chute formed therewith wherein a plurality of vertically spaced door openings are provided in the portion of the silo wall enclosed by the chute and a series of ladder rings are secured within the chute, said rings having one of their ends secured to the silo wall and the other ends fastened to the wall of the chute.

.An object of the invention is to provide means for constructing a monolithic concrete silo whereby the forms used in pouring the concrete sections placed one on top of another may be reused on repeated silo constructions, and readily transported from one job to the next job.

Another object of the invention is to construct a silo having a plurality of vertically spaced door openings in the chute portion of the silo, rather than having a continuous opening as well known in the prior art.

A further object of the invention is to construct a monolithic concrete silo .with means for widening the width of the chute, whereby a plurality of vertically spaced door openings may be constructed in the wall of the silo inside the chute portion thereof, and the doors for said' door openings may be readily inserted in said openings.

A still further object of the invention is to expand the width of the chute portion of a concrete built-up silo, providing for a plurality of vertically spaced door openings and doors in the wall of the silo and ladder rungs on the inside wall of the chute adjacent said door openings and doors. whereby said doors may be swung inwardly into the silo rather than having to be removed and carried down the ladder.

Another object of the invention is to provide forms for constructing a monolithic concrete silo which will be highly efiicient in use and relatively inexpensive to manufacture and produce.

The foregoing objects are satisfied by casting a monolithic silo using expansible forms which provide for an integral concrete chute formed on a portion of the silo exterior and spaced door openings through the chuteenclosed wall portion. Ladder rungs are provided interiorly of the chute with the rung disposed substantiallynormal to the plane of the door openings. Inwardlyopening doors close the spaced door openings.

Other objects will appear as the description proceeds.

In the accompanying drawings which form a part of my application:

FIGURE 1 is a side elevation partly in section of a concrete silo utilizing my improved form structures in the building Patented Dec. 31, 1968 "ice FIGURE 2 is a transverse sectional view taken on the line 2-2 of FIGURE 1;

FIGURE 3 is a transverse view through the improved chute forms; and

FIGURE 4 is a view taken on the line 4-4 of FIG- URE 1.

Like characters of reference are used throughout the following specification and the accompanying drawings to designate corresponding parts.

In carrying out my improvement. I provide metal mold forms consisting of inside and outside form walls 1 and 2, respectively, held together by suitable connecting elements 3, as clearly shown in FIGURE 3 of the drawings.

The mold forms are assembled according to the desired diameter of the silo to be built, with the mold forms for the first or lowermost silo section being supported upon a concrete supporting base 4 set below the ground level 5.

One of the main improvements of my invention is in the construction of the chute 6 which is made approximately 4" wider than usual, by means of inserting the 4" form plates 7 and 8 in the outermost central portion of the chute forms and bolting or otherwise securing the same together. Suitable ladder rungs 9 will be bolted to inserts which will be embedded in the inner wall of the chute adjacent the wall of the silo for access to the plurality of vertically spaced door openings and doors in the wall of the silo.

As clearly shown in FIGURE 1 of the drawings. the chute 6 at its lower end Wlll be spaced approximately eight feet above the ground level 5. Obviously suitable fill-in plates will be used in attaching the chute forms to the silo wall forms to compensate for the chute widening form plates 7 and 8.

Instead of having a single door or opening in the wall of the silo, I have provided a plurality of vertically spaced door openings 10 in which door frames 11 are positioned while pouring the cement. The openings will be of a size to receive a 26" door, and each opening will be vertically spaced 22 part. Upper and lower door hangers 12 and 13 will be connected to the several doors and hinged at their opposite ends to hinge bolts 14 secured in the adjacent silo wall. Latch bars 15 will also be attached to the silo wall and will be adapted to have their hooked ends received in fastening eyes 16 on the several'doors 17 for locking the same when in closed position. The doors 17 will open inwardly into the silo for ready access thereto. Suitable 'turn buckles (not shown) may be used in securing the several forms in position when pouring the cement into the several forms.

Assuming that the height of a completed circular form and chute form is six feet high, it is possible to mold a new six foot section of silo wall upon the next bottom section every day until the silo is completed. A roof or cover 18 for the silo will be placed on top of the silo to protect the silage when placed in the silo.

Many minor changes in detail of construction may be resorted to without departure from the spirit of the invention.

Having thus described my invention, what I claim as 3 new and desire to secure by Letters Patent of the United States is:

1. A cast concrete silo comprising a vertical cylindrical concrete body, a semicylindrical chute integrally formed on the periphery of said body and extending vertically substantially the height of said body, spaced vertically aligned door openings in the portion of said body enclosed within said chute, a plurality of rungs disposed at right angles to said door frames, each of said rungs having attaching means at its ends, one of said attaching means fastened to the silo body, the other fastened to the semicylindrical chute, and individual, horizontally swinging doors closing the openings and being adapted to swing inwardly when said silo is empty,

References Cited UNITED STATES PATENTS 1,087,697 2/1914 Stoeser 52l93 X 1,211,287 1/1917 Clark 52192 X 1,457,089 5/ 1923 Sillman 249-17 2,602,983 7/1952 Troiel 24939 X 2,683,298 7/ 1954 Fadden 52-192 X 10 HENRY C. SUTHERLAND, Primary Examiner.

US. Cl. X.R. 

